I'm really intrigued as to how much of the coffee connoisseur's appreciation of a coffee is down to the flavour and how much is actually down to a placebo style effect and the enjoyment of the ritual.

I love an espresso and make myself one every day but I can't shake the idea that if there were some blind taste tests 95% of the people who say they can really taste the difference between different pourings/grindings etc. (including myself) couldn't tell an aeropress from an old school drip filter machine.